uPVC, Aluminium, Steel: A Comparison
When it comes to specifying or installing the window of your choice, it isn’t just about aesthetics. An equally important factor is performance, cost, and long term value. For trade professionals, understanding the key differences between uPVC, aluminium, and steel is essential, especially as customer expectations are constantly shifting towards more energy efficient, sustainable and environmentally friendly solutions.
Each material has its unique place in the market due to its defining characteristics. uPVC remains a popular choice due to its affordability and thermal efficiency, aluminium for its combined durability and sleek modern aesthetic, and steel for its incomparable strength. Whichever the material, Reading Trade Windows are here to help.
This article breaks down the pros and cons, categorising factors such as the thermal efficiency, cost, strength, and aesthetics, as well as ideal scenarios in which each material would be the best choice. Whether you are advising a client, quoting for a job, or sourcing from a supplier, this guide aims to help you make informed and confident choices in today’s competitive trade landscape.
Material Overview: A Performance Comparison
uPVC:
Widely used in the domestic sector, uPVC offers low upfront costs and effective thermal efficiency, ensuring a home remains warm in winter and cool in summer. It is also easy to maintain, coming in a wide range of colours.
However, its durability isn’t a strong point for this material, as it can warp, fade, or discolour over time if not properly UV protected. It is also not an ideal choice for areas with high foot traffic or frequent high winds, as it is not as strong as other material options.
Thermal Efficiency: High
Cost: Low
Strength: Low to Medium
Aesthetics: Medium

Aluminium:
Aluminium frames possess the perfect balance between strength and aesthetic flexibility. Although more expensive than uPVC, it offers a longer lifespan and a premium appearance. Its exceptional strength makes it resistant to warping, fading, and rust, whilst also offering a slim, modern look which can be used in larger glass areas to let in more natural light.
Nonetheless, it can conduct heat, which can add to energy loss, and is not designed with thermal breaks. As well as being a more expensive option compared to uPVC.
Thermal Efficiency: Medium (with thermal breaks)
Cost: Medium
Strength: High
Aesthetics: High

Steel
Steel is unmatched in terms of its strength, durability, and aesthetics due to its ultra-slim sightlines. Steel structures are renowned for their consistent quality and reliable performance, and are often utilised in heritage buildings or where the architectural appearance is a top priority. While it does carry the highest cost and requires precise construction, it makes up for it in its longevity and stylish appearance.
Thermal Efficiency: Medium
Cost: High
Strength: Very High
Aesthetics: High (with a niche appeal)

So, Which One For the Job?
Each material offers an array of benefits that can suit specific structures and desired appearances. upvc fittings are ideal for domestic upgrades or new builds due to their cost-effectiveness, energy efficiency, and wide range of colour and finishing options. Aluminium would be the best choice for high spec residential or commercial projects due to its prioritisation on durability, weather resistance, and modern aesthetics, though at a higher upfront cost. And steel would be the best option for heritage or prestigious properties if strength and durability are what you are after. Additionally, it offers a wide range of aesthetic options that deliver authenticity and unmatched weather resistance, albeit at a higher price compared to the uPVC alternative.
How Reading Trade Windows Can Help
At Reading Trade Windows, we offer a wide variety of products that include these materials to upgrade any property. Whether it’s a uPVC door, aluminium window, or steel door, you are after, we’ve got it covered.
Our team of experts can guide you through the process by offering a free online quoting engine, technical surveys, and professional installation services to ensure a home tailored to your specific needs. Don’t hesitate to get in touch today!
Categories: Aluminium, News, Steel, uPVC
Tags: aluminium doors, aluminium windows, home improvement, steel doors, steel internal doors, uPVC doors, Windows
About Chris
Chris has been with Reading Trade Windows for many years and has worked in the fenestration industry for even longer. His experience makes him a valuable asset to the team, and he is always happy to show his news, views and advice here on our blog.